The answer clearly is 197.19.
All you have to do is find the formula which is C=2 Pi r.
then you do 31.4 in. times Pi{3.14} and get 98.6.
Then multiply that by 2 and get 197.19,which if you wanted could round up to 197.2.
A circle with a radius of 6 inches has a circumference of 37.7 inches.
The radius of a circle with a circumference 36 inches is: 5.73 inches.
A circle with a radius of 10 inches has a circumference of 62.8 inches.
A circle with a radius of 16 inches has a circumference of 100.53 inches.
The circumference of a circle with a diameter of 45 inches is 141.37 inches.
If the diameter of a circle is 12 inches the circumference is: 37.7 inches (diameter x pi = circumference).
A circle with a radius of 6 inches has a circumference of 37.7 inches.
a circle with circumference of 25.56 inches.
The circumference of a circle of 18 inches in diameter is about 56.55 inches.
The radius of a circle with a circumference 36 inches is: 5.73 inches.
The circumference of a circle with a diameter of 45 inches is 141.37 inches.
A circle with a radius of 2.5 inches has a circumference of 15.71 inches.
A circle with a radius of 18 inches has a circumference of 113.097 inches.
A circle with a radius of 24 inches has a circumference of 150.8 inches.
A circle with a radius of 22 inches has a circumference of 138.23 inches.
A circle with a radius of six inches has a circumference of 37.7 inches.
A circle with a radius of 9 inches has a circumference of 56.55 inches.